Liza,
First off, Sular (nisoldipine) and Cartia (diltiazem) are very different calcium channel blockers and neither is a generic.

A person with a long ago case of Hep-A really (food and water borne) doesn't have much to worry about. It goes away fast without much residual damage. I had it 30 years ago and my liver enzymes are always fine.

Personallly, I think you will be happpier with the diltiazem than the nisoldipine...a lot of people do pretty well on it. Your dosage is medium light.